Article
Chemistry, Physical
Yi Jiang, Qing Wang, Xinchao Wen, Yongbo Yu, Jianfeng Dai
Summary: This study introduced rGO into QDSSC photoanodes to enhance performance by optimizing the built-in electric field in the electrode, leading to a significant improvement in power conversion efficiency.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Energy & Fuels
Roopakala Kottayi, Vignesh Murugadoss, Pratheep Panneerselvam, Ramadasse Sittaramane, Subramania Angaiah
Summary: Cu2AgInS2Se2 alloyed quantum dots were synthesized using a hot injection method, with their structure, optical properties, and composition confirmed through various analyses. The sensitized solar cell using these quantum dots exhibited higher photoconversion efficiency compared to other quantum dots, showcasing their potential for photovoltaic applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Yi Jiang, Yile Dai, Xianfei Xie, Qing Wang, Jianfeng Dai
Summary: In this study, a novel strategy for improving QDSSCs is proposed by preparing transparent anatase TiO2 films with improved optical transmittance. This approach enhances the utilization efficiency of QDs by increasing the number of captured photons. The transparent bulk TiO2 film also optimizes the transmission path of charge carriers and reduces carrier capture composite rate. The results show improved performance parameters and higher transparency, making it suitable for practical application and aesthetics.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Danwen Yao, Zhenyu Hu, Liansheng Zheng, Shanming Chen, Wei Lu, Huailiang Xu
Summary: The research focuses on the fabrication of CdS/CdSe-sensitized quantum dot sensitized solar cells (QDSSCs) using laser-engineered black rutile TiO2 nanoparticles (TiO2-NPs) as the photoanode material. The results show that the devices based on black TiO2-NPs have significantly higher power conversion efficiency (PCE) compared to those using pristine TiO2-NPs. Analysis of absorption and electrochemical impedance spectroscopy indicates that the device with the highest PCE has the highest absorption efficiency in a wide spectral range and the smallest series resistance, which can be attributed to the surface modification of TiO2-NPs by femtosecond laser pulses.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Bingcheng Sun, Bairui Tao, Yanchun Wang, Paul K. Chu
Summary: This paper demonstrates the application of a novel ternary nanocomposite MoS2/Ag/TiO2 photoanode in high efficiency plasma dye sensitive solar cell. The ternary nanocomposite MoS2/Ag/TiO2 was successfully synthesized without any hazardous substances. The addition of MoS2 improves the light absorption ability and electron transfer rate of the photoanode, leading to a significant enhancement in the photoelectric conversion efficiency of the dye sensitive solar cell.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Dongyang Wang, Wenhua Zou, Yexin Chen, Junhong Duan
Summary: In this study, Eu-doped TiO2 nanoparticles with different doping percentages were synthesized by sol-gel method. It was found that doping Eu element can modify the band structure of TiO2 and improve the efficiency of the solar cells.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
S. Liu, R. Fan, Y. Zhao, M. Yu, L. Li, Q. Li, B. Liang, W. Zhang
Summary: In this study, a relatively less toxic CISSe quantum dot was prepared by an organic high-temperature hot injection method for use in QD-sensitized solar cells. Through Sn doping and ZnS passivation, the electron collection efficiency was improved and charge recombination was inhibited, resulting in a power conversion efficiency of 6.7% for the QDSSC.
MATERIALS TODAY ENERGY
(2021)
Article
Chemistry, Physical
Bhagatram Meena, Palyam Subramanyam, Duvvuri Suryakala, Vasudevanpillai Biju, Challapalli Subrahmanyam
Summary: The study demonstrates the fabrication of a ternary photoanode (TiO2/Ag2Se/CdS) with low charge transfer resistance and high photocurrent density, achieving an estimated photon-to-hydrogen conversion efficiency of 14%.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Physical
Akash S. Rasal, Sudesh Yadav, Anil A. Kashale, Ali Altaee, Jia-Yaw Chang
Summary: This review discusses the factors influencing the performance stability of QDSSCs and provides insights into the mechanisms causing degraded performances. It also presents cutting-edge strategies for improving the overall performance stability of QDSSCs.
Article
Chemistry, Physical
Sanjay Kumar Swami, Neetesh Kumar, Daniela R. Radu, Sung Woon Cho, Jongsu Lee
Summary: In this study, a post-lithium (Li) treatment on TiO2 films was performed to enhance the optoelectronic features and power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs). The Li treatment reduced defects and improved the crystallinity of the TiO2 films. DSSCs fabricated using Li-treated TiO2 films as photoanodes showed a performance improvement of approximately 20% and a PCE of 10.5%, compared to the control DSSC with a PCE of 8.7%. The enhanced performance was attributed to improved structural properties, efficient charge transport, and suppression of recombination due to the passivation of trap states.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Haoran Yan, Minghan Chen, Wenbo Liu, Peiyun Wang, Menglin Liu, You Liu, Longqiang Ye, Mengmeng Gu
Summary: To enhance the power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs), niobium oxide and Ti3C2 quantum dots were introduced into the photoanode, resulting in improved photocurrent and efficiency. The DSSC device with the composite photoanode achieved a remarkable PCE of 7.24%, surpassing the standard device's efficiency of 4.60%.
Article
Energy & Fuels
Iqbal Singh, Viplove Bhullar, Aman Mahajan
Summary: This study focuses on improving the performance of quantum dot-sensitized TiO2 photoanodes using graphene nanoribbons (GNRs) to reduce recombinations and enhance electron transport. The optimized photoanodes show higher power conversion efficiency and photocurrent density in quantum dot-sensitized solar cells and photoelectrochemical water-splitting applications.
Article
Materials Science, Multidisciplinary
Hajer Gallah, Frej Mighri, Abdellah Ajji, Jayita Bandyopadhyay
Summary: In this study, high porous flexible structures composed of polyethylene terephthalate (PET) and a PET composite with titanium dioxide (PET-TiO2) core/shell nanofibrous mats were developed using coaxial electrospinning technique. Different shapes of TiO2 nanoparticles were incorporated at various contents in the nanofiber shell to improve the properties of the fibrous mats. The surface morphology, porosity, thermal stability, dye adsorption, optical and mechanical properties of the nanofibrous mats were investigated. The successful incorporation of TiO2 nanoparticles inside the nanofibers was confirmed and the addition of TiO2 shifted the absorption spectra of the mats. The PET/(PET-TiO2) core/shell nanofibrous mats showed higher thermal stability and efficient charge transfer.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Danwen Yao, Zhenyu Hu, Ruifeng Zheng, Jialun Li, Liying Wang, Xijia Yang, Wei Lu, Huailiang Xu
Summary: By designing quantum dot-sensitized solar cells with a dual-photoanode architecture and using black TiO2 nanoparticles processed by a femtosecond laser, along with CdS/CdSe QD sensitizers, a maximum power conversion efficiency of 11.7% was achieved. The enhanced efficiency is mainly attributed to the improved light harvesting of black TiO2 due to the black TiO2 shells formed on white TiO2 nanoparticles.
Article
Chemistry, Physical
In-Rok Jo, Young-Hoon Lee, Hyunsoo Kim, Kwang-Soon Ahn
Summary: Nitrogen-doped graphene quantum dots (N-GQDs) play a crucial role in enhancing the performance of quantum dot-sensitized solar cells by boosting light absorption, facilitating electron transportation, and suppressing charge recombination, leading to a significantly improved power conversion efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.